Compressor for air, &amp;c.



no. 647,383. Patented Apr. I7, |900. H. c. SERGEANT.

COMPRESSOR FOR AIR, &c.

(Application filed July e, 1899.)

(No Model.) 2 Sheets-Sheet I.

Wzwewgef MM 7,

onlus PETERS co., Pwmomrpo., wAsmNmon n c No. 647,883. Patented Apr. I7, |900. H. C. SERGEANT.

COMPRESSOR FOR AIR, 8m.

(Application led July 6, 1899.) (No Model.) 2 sheets-sheet 2.'

'rus Nonms PETERS co.. knorouruo.. WASHINGTON, o. c.

NITED STATES PATENT OFFICE.

-IIENRY O. SERGEANT, OF WESTEIELD, NEV JERSEY, ASSIGNOR TO THE lNGERSOLL-SERGEANT DRILL COMPANY, OF NEW YORK, N. Y.

COMPRESSOR FOR AIR, 80C.

SPECIFICATION forming part of Letters Patent No. 647,883, dated April 17, 1900.

Application yled July 6, 1899. Serial No. 722,918. (No model.)

To all whom t may concern:

Be it known that I, HENRY C. SERGEANT, a citizen of the United States, and a resident of Westfield, in the county of Union and State of New Jersey, have invented a new and useful Improvement in Oompressorsfor Air and other Gaseous and Aeriform Bodies, of which the following is a specification,

I will describe my invention in detail with reference to the accompanying drawings and afterward point out its novelty inthe claim.

Figure l represents a central longitudinal vertical section of a compound compressor in which my invention is embodied; Fig. 2, a transverse vertical section approximately in the line 2 2 of Fig. 1.

Similar leters and numbers of reference designate corresponding parts in both figures.

a is a closed water-box supported on a bedplate h and foot c and having locatedA within it the two cylinders d e of the compressor, arranged in line with each other. Throughthis water-box there is intended to be kept up 1 around the two cylindersa constant circulation of cooling-water, which is admitted by a pipe at-near the bottom and passes out bya pipe at 5 near the top. The two pistons f and g, working in the two cylinders, respectively, are solid or valveless and connected with the same operating-rod h, which passes through a stuffing-box l0 in the closed outer end of the cylinder d. The two cylinders are in free communication with each other at their adjacent ends. The valve-boxes, valve-seats, and valves are arranged at the outer ends of their respective cylinders. The valves are all represented of a well-known puppet kind.

Thevalve-box t', containing the inlet-valve j of the larger orlow-pressure cylinder andthe seat therefor,only one such valve being shown, is arranged at the bottom of said cylinder in a passage 6, which is formed between said cylinder and the bottom of the water-box a and with which is connected the inlet-pipe for the air or gas to be compressed. The box 7c, containing the discharge-valve Z of the same cylinder and the seat therefor, is arranged in a passage 7 within the upper part of the cylinder, from which passage there rises within the Water-box a a discharge-pipe 8, having branches 9, as will be hereinafter described.

The inlet and discharge valves of the smaller or high-pressure cylinder e are arranged in the hollow head m of said cylinder, the said head itself forming the box for and having formed within it the seats for the inlet-valve 'n and for the outlet-valve 0 and being contained entirely within the water-box a. The valveboxes t' 7o and the valves j Z therein, furnished with closing-springs, are represent-ed of a so well known kind as to need no description. The inlet-valve ln is represented as having a stem iitted to a guide within the valve o, and the latter valve is represented with a stem fitted to a guide p, inserted into the cylinderhead fm. The said valves 'n o are represented with closing springs of coil form, applied in so well known a manner as to need no description.

Between the discharge-pipe 8 of the lowpressure cylinder d and the inlet-chamber 1l, provided in the head m of the high-pressure cylinder below the valve n, there is located in the lower part of the water-box of, a cooler q, represented as consisting of two coils of pipe, each connected at one end with one of the branches 9 of the discharge-pipe 8 and at the other end with the said chamber 1l. Above the discharge-valve o there is in the cylinderhead or valve-box m an outlet r for the finallycompressed air, and from this outlet a pipe s leads Vthrough the side of thewater-box.

The water-box a, which is intended to be kept closed during the operation ofthe compressor, has in it suitable openings provided with covers l2 13 14, which are removable for ing-water,will all be kept constantly cool, and

IOO

cooling-Water,v a very simple and effective l of the several coils and a valved communi compound compressor is obtained.

What I claim as my invention is- The combination in ,a compound compressor, of cylinders and pistons for successive compressions, a Water-box in vwhich said cylinders and their valves are contained, a cooler consisting of a plurality of coils of pipe arranged in said Water-box, a discharge-pipe from the first or low-pressure cylinder having a plurality of branches communicating with said coils at one end of each, a chamber of communication commonto the other ends cation between the said chamber and the highpressure cylinder, substantially as herein described.l

In testimony that I claim the foregoing as my inventionI have signed my naine, in presence of twowitnesses, this 5th day of July, 1899.

HEN RY C. SERGEANT.

Witnesses: l

y FREDK. HAYNES,

LIDA M. EGBERT. 

